3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php #str = "<b>ayat</b><br /><b>ollah</b>"; echo $str; $str = preg_replace( "/</u", "/ </u", $str ); echo $str; ?>
Output for 5.0.4 - 7.1.0
Notice: Undefined variable: str in /in/WsdRv on line 6 Notice: Undefined variable: str in /in/WsdRv on line 8
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: str in /in/WsdRv on line 6 Notice: Undefined variable: str in /in/WsdRv on line 8